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from __future__ import annotations
from unittest.mock import AsyncMock
import pytest
from hypercorn.middleware import ProxyFixMiddleware
from hypercorn.typing import ConnectionState, HTTPScope
@pytest.mark.asyncio
async def test_proxy_fix_legacy() -> None:
mock = AsyncMock()
app = ProxyFixMiddleware(mock)
scope: HTTPScope = {
"type": "http",
"asgi": {},
"http_version": "2",
"method": "GET",
"scheme": "http",
"path": "/",
"raw_path": b"/",
"query_string": b"",
"root_path": "",
"headers": [
(b"x-forwarded-for", b"127.0.0.1"),
(b"x-forwarded-for", b"127.0.0.2"),
(b"x-forwarded-proto", b"http,https"),
(b"x-forwarded-host", b"example.com"),
],
"client": ("127.0.0.3", 80),
"server": None,
"extensions": {},
"state": ConnectionState({}),
}
await app(scope, None, None)
mock.assert_called()
scope = mock.call_args[0][0]
assert scope["client"] == ("127.0.0.2", 0)
assert scope["scheme"] == "https"
host_headers = [h for h in scope["headers"] if h[0].lower() == b"host"]
assert host_headers == [(b"host", b"example.com")]
@pytest.mark.asyncio
async def test_proxy_fix_modern() -> None:
mock = AsyncMock()
app = ProxyFixMiddleware(mock, mode="modern")
scope: HTTPScope = {
"type": "http",
"asgi": {},
"http_version": "2",
"method": "GET",
"scheme": "http",
"path": "/",
"raw_path": b"/",
"query_string": b"",
"root_path": "",
"headers": [
(b"forwarded", b"for=127.0.0.1;proto=http,for=127.0.0.2;proto=https;host=example.com"),
],
"client": ("127.0.0.3", 80),
"server": None,
"extensions": {},
"state": ConnectionState({}),
}
await app(scope, None, None)
mock.assert_called()
scope = mock.call_args[0][0]
assert scope["client"] == ("127.0.0.2", 0)
assert scope["scheme"] == "https"
host_headers = [h for h in scope["headers"] if h[0].lower() == b"host"]
assert host_headers == [(b"host", b"example.com")]
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